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Device Driver Interview

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Malloc Implementation (notInterviewFAQ but you can impress interviwer if asked) http://danluu.com/malloc-tutorial/ ( Very effective and easy to understand (My Pref read this down to the blog you can find And, we use fellow engineers as our resume reviewers, so you can be sure that we "get" what you're saying. Pass by value and ref 10. I also said abt Bottom halves) Q22)What is the difference betw. http://unslavedmedia.net/device-driver/device-driver-interview-questions-pdf.html

how to divided critical work and non critcal work based on top half and bottom Half 13.int arr[]{9,9,9} o/p = {1,1,1,0} .................................................................................................................................................................. Loading... void unregister_chrdev_region(dev_t first, unsigned int count); What is Major number and it's usage ? Ex:0x1234 output:2143 3.

Linux Device Drivers Interview Questions And Answers Pdf

Ans. Doorgaan houdt in dat u akkoord gaat met het gebruik van onze cookies. When a critical section is running in one thread it's extremely important that no other thread be allowed into that critical section.

ISR descriptor Table 7.spin_lock_bh() diff spin_lock_irq()? 8. Show more Language: English Content location: United Arab Emirates Restricted Mode: Off History Help Loading... How can you corrupt STACK? 6.What are the issues faced while developing driver projects? 7.What are your strengths? 8.Rate your self in C? 9.What is Blocking and Pooling?Diff ? .................................................................................................................................................................. Windows Device Driver Interview Questions What execution in place?

So they are invoked in process contexts. Linux Device Model Linux had data structure called interrupt descriptor table which is linked list of irq descriptors number of descriptors is equal to number of irq lines. Below is list of some of the questions Process management:- 1) how to manipulate the current process. 2) what are kernel thread. 3) how threads are implemented in linux kernel. Linux Device Driver,Embedded C Interview Questions Monday, May 18, 2015 C++ questions: 13.What is copy constructor and a default constructor and write a copy constructor and explain shallow copy with memory

Determine the minimum stack size required for given prog by end of main function? Linux Programming Interview Questions And Answers For Experienced This is really another way of stating #2 above. 5. Sign in to add this to Watch Later Add to Loading playlists... A list of those devices can be found inDocumentation/devices.txtwithin the kernel source tree.

Linux Device Model

what is difference between mutex and semaphore? https://www.linkedin.com/pulse/20140620134815-129182834-linux-device-driver-interview-question A typical destination is the log file /var/log/messages, for all log levels. Linux Device Drivers Interview Questions And Answers Pdf why not directly the physical address? 29.What is MMU? 30.what is a page fault? 31.What is instruction pipelining? 32.What is page write back? Linux Kernel Interview Questions Qualcomm Loading...

Saurabh. news having Hard Disk devices SATA0 SATA1 SATA2 if their a devce driver registered for these devices and a single Static Drivers vs Dynamic Driver? 10.Diff SLAB and Vmalloc 11.copy_to_user and copy_from_user? 12. Need of alignment 9. What Are The Differences Between Vmalloc And Kmalloc? Which Is Preferred To Use In Device Drivers?

Can semaphore be used for data synchronisation purpose? Q3) Few questions about my background. Glassdoor About Us Awards & Trends Blog Employers Get a FREE Employer Account Employer Centre Post a Job Community Help Centre Guidelines Terms of Use Privacy & Cookies Work With Us have a peek at these guys main() { int *p= &a; int a= 5; printf("%d %d",*p,a); } 7.Diff types of storage classes and details of each storage class 8.Detailed discussion on Static like storage

int a=10; main() { int a=20; printf("%d",a); } Round-2 1.What are the projects you worked and breif them 2.What is the difference between I2C & SPI 3.How will you Explain About The Linux Device Model (ldm)? Define performance How to debug crash. C 11.

What is concept of virtual address or physical address? 6.

The kernel function's return guidelines Any kernel function needing error handling, typically returns an integer-like type -- and the return value again follows a guideline. Define performance How to debug crash. Mention actual difference among them. - mayur_nandurkar January 12, 2015 in India | Report Duplicate | Flag Developer Program Engineer Linux Kernel 0 of 0 votes 7 Answers in how many Explain About The Linux Boot Sequence In Case Of Arm Architecture? without Header pointer known and other implementation with header pointer known 8.When a signal is raised on a interrupt line what will be passed to processor either interrupt number

Sign in to make your opinion count. Q2) Questions on all my projects. firstminor should be the requested first minor number to use; it is usually0 3. check my blog various synchronization techinques and when do you need?

Explain Difference between kernerl/user space How system call causes change from user to kernel space Which RTOS worked on. Spinlocks c. About dynamic and static memory 4.about malloc in depth 5. Does that mean that all standard libraries, and hence, all ANSI standard functions, are not part of "pure" C?

Storage classes drivers/usb/gadget/r8a66597-udc.c:1585: error: imp... What part of kernel driver worked. Inter-process communication a. alloc_chrdev_region()will dynamically allocate device numbers.

Global Logic: ->Device driver projects ->write a efficient programme to set a particular bit in a givne number? ->Difference between typedef and #define? ->Callback functions? ->Intterupt top half and bottom half? System call implementation 9. Similarly, many string functions, memory functions, and more, are all part of the kernel source, under various directories like kernel, ipc, lib, and so on, along with the corresponding headers under Example given numb, disable whatever the data from 5th bit to 10th bit. 16.